<template>
  <div class="t_pagination_select">
    <el-select
        v-model="childSelectedValue"
        @change="(val) => $emit('change',val)"
        :style="{width: width||'100%'}"
        v-bind="attrs"
    >
      <el-option
          v-for="item in optionSource"
          :key="item[valueKey]"
          :label="item[labelKey]"
          :value="item[valueKey]"
      ></el-option>
      <el-pagination
          small
          layout="total,prev, pager, next"
          @current-change="(val) => $emit('page-change',val)"
          :hide-on-single-page="true"
          :page-size="paginationOption.pageSize"
          :current-page="paginationOption.currentPage"
          :pager-count="paginationOption.pagerCount"
          :total="paginationOption.total"
      ></el-pagination>
    </el-select>
  </div>
</template>

<script>

export default {
  name: 'TPaginationSelect',
  props: {
    value: {
      type: [String, Number]
    },
    // 选择框宽度
    width: {
      type: String
    },
    // 传入的option数组中，要作为最终选择项的键值名称
    valueKey: {
      type: String
    },
    //传入的option数组中，要作为显示项的键值名称
    labelKey: {
      type: String
    },
    // 下拉框组件数据源
    optionSource: {
      type: Array
    },
    //分页配置项
    paginationOption: {
      type: Object,
      default: () => {
        return {
          pageSize: 6,//每页显示条数
          currentPage: 1,//当前页
          pagerCount: 5,//按钮数，超过时会折叠
          total: 0 //总条数
        }
      }
    }
  },
  computed: {
    childSelectedValue: {
      get () {
        return this.value
      },
      set (val) {
        this.$emit('input', val)
      }
    },
    attrs () {
      return {
        'popper-append-to-body': false,
        clearable: true,
        filterable: true,
        ...this.$attrs
      }
    }
  },
  watch: {
    childSelectedValue (val) {
      this.childSelectedValue = val
    }
  }
}
</script>
<style  scoped>
/*.t_pagination_select {*/
/*  ::v-deep .el-pagination {   :deep(.el-pagination)*/
/*    display: flex;*/
/*    margin-top: 15px;*/
/*    margin-left: 15px;*/
/*    background-color: #fff;*/
/*    align-items: center;*/
/*    .el-pager {*/
/*      display: flex;*/
/*      align-items: center;*/
/*    }*/
/*  }*/
/*}*/
</style>
